以醋酸铜、醋酸锌、氯化亚锡及硫脲为前驱体,油胺为溶剂,采用微波辅助合成 Cu2 ZnSnS4(CZTS)纳米晶;所得样品的物相、结构、形貌以及光学性能分别用 X 射线衍射仪、高分辨透射电子显微镜、拉曼光谱仪和紫外-可见分光光度计来表征;结果表明:微波加热13 min可合成高质量的锌黄锡矿结构的Cu2 ZnSnS4纳米颗粒,CZTS 微球平均直径约为23.68 nm;所得样品的禁带宽度经估算约为1.52 eV,与薄膜太阳能电池所需的最佳禁带宽度相近.
Nanocrystals of copper zinc tin sulfide (CZTS,Cu2 ZnSnS4 )were prepared by the microwave-assisted method using copper acetate,zinc acetate,tin chloride and thiourea as precursors and oleylamin as the solvent. The samples were characterized by X-ray diffraction (XRD),High-resolution transmission electron microscope (TEM),Raman spectroscope and UV-Vis-NIR spectroscope.The results indicated that the kesterite structure of CZTS nanoparticles can be synthesized in 1 3 min via microwave heating.The CZTS are of the microsphere shape,the average diameter of 23.68 nm and the near-optimum optical band gap of 1.52 eV.
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